Affiliation: | (1) Section of Tumor Biology and Immunology, Department of Experimental and Clinical Microbiology, University of Sheffield Medical School, S10 2RX Sheffield, S. Yorkshire, England;(2) Department of Medical Genetics, University of Sheffield Medical School, S10 2RX Sheffield, S. Yorkshire, England;(3) Department of Surgery, University of Sheffield Medical School, S10 2RX Sheffield, S. Yorkshire, England |